Tire buffing and rebuilding machine



Jan. 2, 1945. P. o. CHAMBERS TIRE BUFFING AND REBUILDING MACHINE FiledJuly 8, 1941 5 Sheets-Sheet 1 INVENTOR. 10E/my 0. @HH/7059s Jan- 2,.1945- P. o. CHAMBERS TIRE BUFFING AND REBUILDING MACHINE Filed July 8;1941 1 5 SheetsfSheet 2 INV 'NTOR. Psx/ey 0. vAMssRS Jam .2, 1945 P. o.CHAMBERS 2,366,685 TIRE BUFFING AAND REBUILDING MACHINE Filed July 8.1941 5 Sheets-Sheet 3 INVENToR. ,Pm/ey 0. CHn/vafs Jan. 2,- 1945. p, QCHAMBERS 2,366,685

` TIRE BUFFING AND REBUILDING'MACHINE 5 SheetsSheet 4 Filed July 8, 1941I im? \)LQLLM u IN VEN TOR Heeey 0. C11/9m se es Jan. 2, 1945.. P, 0.QHAMBERS 2,366,685

TIRE BUFFING AND REBUILDING MACHINE Fi1ed`J-uly 8, 1941 5 Sheets-Sheet 5`f INVENTOR. Pemey o.. (Wn/nfl? Patented Jan. 2, `1945 "#frmEBUEFIyNGREBU-ILDING Renn QQQhaui-her L S-sietei Vulcanizsre r'mfxsfir-iventionrrelates topparatus-fpre bglng the'worn treadqubberffrpgn pneumatietilfesand` HeretQfore; @apparatus l of Athe eharepter :de-`

i tire repetir` establishments, because sepeate units n were requiredioriihs tire bufiiugeudtresure* building operations ,e "Sueh seperateunits .ref quiredspareie floor spaceuapusisle ation which frequently,detenfed,- smell' estagblhislpnnents,u as-zemnages;servisefsteiieus;ets-1.iiqm. ailing tire repaireeuipiusninThe"re1etive1y his infiel `buildingv n units has-n' been. a, merscgxisideretiun which;` has Dreyerlited e atyelywiuerl-gesteblishme'ntoftire repairbusi sssin the Pesi@ An pbjectgoff this invention is toVprgvie ,a unitary y machine o itheV -ehaxaeter jgesegbed Qn Which-mayyb@ performed beth. 'the tirs; its@ buiiine Aand the, treed rebuilding.ioperetiousxths usualv .necessity i. providing; separe@ `meuiliiuesfonthese opratiopsbsiugpbvietedi s Another ubiect 0fismusntiunisgteprovisie. a simplefpombat me bine ufjtlue cheresterslefscribed '..Ch fwilvltbe `evaileble "giuziure., repen establishmentsetnreletivelylvz 09st,

` `Anstbei?:O biect ofthe ,mventierif is a machine,'ofithe.'harasterslser ed a turntable-funimeuiitine; 'r

s previas whih,

adjustable with respecetu Thesealfldthe bermanifest Aning/the vfollowing bxfief qesxjption and the' accqmnauxeg drawingsli"OMheesQQmpem/inedrawings: n n

the invention; .the machine beine shown @9ulcliiiouforzaninitialbuiiiugQpemtiqnl "i 4 reed;iragmeptuiyissessrse n enlarged4 s cale,gte/ken@Substantiallywn tlf1e:linee` Chicasu assieme i comnenxwhiea n .neernuxatimotlllineis `enleffged scales; itakenussujstantially .tonsth'emli'ne 6.-"6of1igu re3.\\` i elevation nina acombnedi tire bumngend treadfrebuldingmachine:emhedyine 'liiiglurev SuisasplansviewfsimilarhtmFgure 8,-;.bt `illustrating the:tire.iin@nan-intermediate i "tire efi sanidwbraeketsjthesegegs-straddling. he tOptOf treue -buifediaedrebuilt/wim?newsfeed rumenstuck: Nut-gw isthisustedl uw Spindle iumteblethfuuif gpjariy aajiistee;pesgemnsgl ini- Wemmel plane 'head- 25j which --gfxornlalflyprevents-the pin from the .nerizonta b i qFi-glnrevs-l Ofisg 1a;mgfxnentaweliosseseetieneen. an

bdimentvlisztheLinvention g gereenynemapner te fbel d escriibedifa n lvengaging the pivot block 412.

stant convenient reach of the operator. The outer end of leg I1a of thebracket is curved substantially on a radius from pivot I8 so that it mayswing freely'past the pivot 24 of the clamping device 22. A projectionI1d at one corner of leg 41a is adapted to engage pin 24 to limit theswing of the turntable in one direction beyond a substantial angle belowa horizontal tire buiing position, and a projection |1e on cross-pieceIlc is engageable witha block on bar Ia on post i5 to limit the swing inthe opposite direction beyond a vertical plane for thestire rebuilding yoperations, as will be described later.

A tire T mounted on a rim R of known type with a pressure bag B withinthe tire casing, preferably inflated to about ten pounds per squareinch, may be releasably clamped on turntable 2| by means of a bar placedacross diametrically op- .v posite outer edge portions of the rim, asshown in Figures 1 and 5, pins 3|, `3| on the turntable eX` tendingoutwardly through apertures in the bar, and being adapted to have thumbscrews 32, 32 threaded on the outer` ends thereof to apply clampingpressure tothe bar.

l Releasable means for centering the rim and tireassembly on theturntable 2| is best shown in Figures 1 and 5. .This may comprise aring` 35 mounted to rotate about bearing 26, there being pivoted thereonat vspaced points 36, 36 a plurality of bars 31, 31 extending radiallyoutwardly Vwhich have angularly extending end portions 38 `for engagingthe inner periphery of the rim at spaced points. The bars 31 are guidedby means of threaded pins 39 xed on the inner face of the turntable andextendingthrough slots 40 in the bars. A radially extending lhandle 4|is provided l on the ring 35, whereby the ringmay be turned inclockwisedirection, as viewed in Figure 5, to move the pivots 36 in arcsand thereby to urge the bars 31 substantially radially outwardly, asguided by the pins 39 in slots 40, to engage the end portions 38 withthe inner periphery of the rim R. Equalized force will thusbe applied tothe bars 31 to center the rim with respect to the spindle I9 of theturntable, the centering means, of course, being operated while theclamping bar 30 `is not under full-clamping pressure of. thumb screws32. Wing nuts 42, 42 may bethreaded on Vthe pins 39 for clamping thebars 31 against the turntable-2|, thereby to fix the bars in saidoutward centering positions; Conversely the centering means maybereleased by releasing the wing nuts 42 and turning ring 35 incounter-clockwise direction, by means of handle 4 I, to urge the bars 31inwardly of the rim R.

Pivotally mounted on a pin 45 extended through post I5 adjacent thelower end thereof may be a frame 46 whichl extends angularly upwardly,as shown in Figure l, and which is angularly adjustable with respect tothe post I5 by means of rod 41 `rotatably receivedv through a block 41apivotally connected to the end of a pin 48 which is rotatably receivedthrough said postat a point intermediate the turntable pivot I8 and thepivot pin45, said rod being threadedr at the free end portion thereofthrough a nut 49 pivoted on one side of frame 46. The weight of frame 46is supported` by a block 4lb on the pivotend of rod 41 Secured on theouter end of the rod` 41 is a crank handle 50 for turning the rodrelative to the pivot block 41a, whereby the` nut.49 travelling on thethreaded portion of the rodwill cause angular adjustment of the frame 46withurespectto the post in vertiy 2,366,685 the clamping nut handle 23ato be Within con-` cal plane parallel to the plane of movement ofturntable bracket I1 on pivot I8.

Mounted at the upper end of frame 46 may be a suitable motor 5I on thedriven shaft of which is keyed the standard rotary type of tack rasp orbuffer 52 adapted to be arcuately adjusted to- `Ward and from bufngcontact; with tire T mounted on the turntable 2|, by turning handle 50on rod 41 to swing frame 46 on its pivot 45. 'The tacks" or pins 52a,52a 'on the rasp preferably are in helically arranged rows so as t0impart rotary movement to the turntable 2| on spindle I9,

- upon the rasp engaging the tire T, by virtue of table in said oppositedirection against a braking the turntable being rotatable on spindle I9in various planes, as the turntable is adjusted on pivot I 8 throughclamping nut 23, in which planes the path of rotation of the rasp 52crosses or intercepts the peripheral portions of the tire being buffed.

For the purpose of applying rubber stock, cornmonly called camelback, tothe buied area of the tire, it is essential that the tire be arranged torotate in a vertical plane. To this end, the

turntable may be swung on pivot I8, until it reaches the verticalposition shown in Figures 3 and 4, as limited by an overhanging portionlI'I e on Athe cross-piece Ilc (Figure 3) of U-bracket I1 engaging stopbar I5EL on post I5.

It is also essential when applying the camelback that the turntable 2|be periodically held in non-rotative condition, in order that the oper-Gator may use both hands progressively to apply the Camelback incentered relation around the buiedarea of the tire. For this purposeabar 53 may. extend from cross-piece Ilc of bracket l| 1 parallel withthe turntable 2|, and a pin 54 is slidably received through an aperturein said bar to be engageable atv will in one of a plurality ofcircumferentially spaced apertures 55, 55 in said turntable. Insertionof pin 54 in one of the openings 55` prevents rotation of the turntableon spindle I9. Spaced cotters 55, 56 are provided in pin 54 shiftably toretain the same on bar 53. In the operation of the machine shown inFig-` ures 1` to 6 Athe operator preferably sits or stands at the nearside of the machine as viewed in Figure l, for example, the tire 'Imounted on rim assembly R having been centered on the turntable 2| byturning ring 35, by means of handle 4|, to urge thebars 31 radiallyoutwardly into engagement with the innerperiphery of the rim, and bar 30having been clampedacross the outer edgev portions ofthe rim by means ofthumb-screws 32 on pins 3|, for clamping the 'rim to the. turntable.Next, the operator, through theclamping nut 23 engaging the leg |1a ofbracket |1 against post I5, fixes the turntable at an initialV tirebufng angle, substantially as shown -in Figure 1. By turning the handle5D,frame 46 may be angularly adjusted to swing the .tack rasp 5,2 Ainvanarc about pivot 45, and thereby, to engage the topside of the tire to'suicient depth, asdetermined by trial, the motor 5 I, o'f course, beingcontinuously driven. While the buffer or rasp 52 is thus heldagainst thetirev theoperator may manually turn the turntable 2| in one direction onspindle I9, against the tendency of the spiral rows of tacks or teeth52*a onthe buierto cause rotation of the turntable in the oppositedirection, or the buffer may be allowed to turn' the turnaction appliedby the operator holding hishand or hands on the tire. Similarly, byprogressively adjusting and clamping the turntable'at various anglestoward` a horizontalpositi'on 'shown in assesses chainl-dotted lines inFigure` 3 the handlel 50 :may befrprogressively" turned in `properdirection' to cause the 1 buffer 52l tof make ycontiguous f annular cutsof` desired depth; thereby tolremove a vdesired amount of old treadrubber@ inl accordance Awith a template of predetermined contour (notshown) i i When "the tire has beenbuffed tothe central treadvportion ofthe tire.T,-tl-1e buffer maybe backed awaytopermitlreversal ofthe tireon the l turntable 2|;` the `rim Rlb'eing centered L and clamped thereonaspreviously described, l after i which fthe above" described bufngioperationsmay.

be` `performed-t bllii` from the other side of` the` tiref'tothecenterfof the tread. l

After the tire T has` been. completelyfbuffed inthe above describedmanner, the iclamp 23 is released `to `permit .the tire. and turntable.to .be

. swung fon. pivot.I I8 `to yvertical position, `as `shown.

`in Figures 3 and. 4,"the end of pin SEbeinglengaged in anA openingl .55inA the turntable to .hold

R -mountedton .thaturntablenwill be'substantially unobstructedffor.applying new. ltread'frubberstock ori1.camelback\jonto the tire; Forretainingl: the head-.16 2.1 `in these' various:` rotatably'. adjustedl, po.-

vsitionsaazipawl 12,.;1pivotedriat.13tbetween spaced lugsrr'HLY oni post.3604; may/bef. normally yieldingly urgedbetweena adiacent-teeth 1.5,:15 ;of .a ratchet `wheels?! 6', integral with: head 52;.by. acompression spring. .11 suitably. retainedfbetweerisaidf4 post-and anintegral. extension] 8` from pawl 1 2.

For lockingautheeturntablei EL against rotation .onuspindle 55;.whi1e.applying-.new treadwstock Ato aibnfeditiresaspreviouslyadescribed; alpin1191s slidable'lin.: an aperture in lazbar: .im extending upefwardlyfrom: headt62: to: be-Isselectively engageable `one zomaf-iseriesczof;circmnferentially;.spaced apertures. lwinztheturntable; .Gottenpins.82,

the :same in non-rotativepositio-n `on spindle I9.` l

In this `xed position the operator,` starting` at the topvof` `the tire,mayplace the endporton of a 82 are provided in pin 19 forlimit-ing;movement` thereof' in either. direction.` f l 1shiftabiymounting. a tuning device-.111.111

.association `with;,turntable- 6.1,` an upwardlyl `exf tending.rframenhmay. be) pivpted; atene ,endy on iaspin:B5deceived,throughgaperturs inspaced lugs predetermined. length ofraw` rubber tread stock orwcamelback thereon, rubber cementor likeadhesives having been previously applied tothe buried areas. of. the.tire, in .accordance with. the usual.: practice.` *By progressively.turning the turntable onz` spindle 19,. and periodically .locking it`in flxedupositions by `means of pin `54, the 0p` eratorfmay.progressively place or build "camel-` backlcompletely around the buledportion of the tire. Thezends of the length. of .camelback-are thenspliced together.: .witha .suitable handtool,

after whichithe` operatorimayfreely rotate the turntable 2l, .withone`hand, the pin .54V `being in released position; while he utilizes hisotherhand toroll down the Camelback with suitable handrolls (not shown).l l L Referringnow tothelmodiedlform ofthe invention shown in Figures'1` to 10, the numeral 60 indicates aztubularpost or uprightlhaving. abase 6| `for firmly bolting the same to a licor.A .A head 62 may`berotatably supportedz'on the upper end ,ofl post BU bynafreduced.portion 63 extending. into the'hollow .end of. the`post-.andproviding.an annular .shoulder portio-nlv 'which engages Ztheup- .per` rim of the lpost' (see AFigure 10);

i .i Thezbulngi device; .1I`- may comprise.:

.taclrrasp `92;keyed .ong the drivenshaft of motor N on-rotatiablywsecured in said `head .tot extend outwardly thereof substantially.at .right angles to the. axisfof .thei postmay be a `pin 651, whichjournals on a central bearing E6 secured. on a turntable 61, similartothe turntable 2l previously.. described in` connectionxwith Figures .lto"` 6, for mounting a tire` and .rim assembly. The turntable isretained 'on the shaft` 65 by nutsf threaded on theend of the shaft,suitable i spacer sleeves GSand "HJv being. provided,..as shown;tospaceutheturntable with respect to head '62: `Thusthe `turntable `614is rotatable in a vertical `plane .in `all sitions of head 62on post60. i

The mechanism for releasably wcentering .l :and

clamping a `tire andrm assemblyy on the turntable. `61. is substantiallythe same` asi previously rdescribed, lparticularly `in connectionwithFigures .1. andw 5, and hence,` like parts are given4 like numerals.

;. The headwB rotated .po-

yurel9g..or'to. swingto. a position at the otherfside of the` post,asindicated inuchainfdotted lines "at t 2 is rotatable:through-360onpost .BD toswing the turntable E1fto varousangular `positions.relative.toabufling devicefllgto be de- .,scribedllater, at one isideof.saidrzpost,A 'asrndicat'ed in full ,and chain-dotted linesattherightof Fig-` l which 86,:f86fon; base B I.. `The .frames Biblis'adjustable :.t. I

swing .on its pivot,` to; .shift .bung device# 11 Il to- Wardrand :frompostumi.; by. means orda roe-s1 IOtatablyireceived .at lone Lend :in a.block 88`.pivoted rodthis always.` held. against pivot sblock. 88.y by

athefweight orframer. Y

93tonrotate on; a substantially vertical axis. i Motor'.3;z:may==.be..secured:on atslide. member=fl94` mounted on theuppexendzoilframe.84...@Ashaft 96.y is rotatably `supported betweenspaced sides 91, `91 of said frameyand'has threadedmthereon a travelerl98ywhich is: securedto a portion'!! of slide 494. projecting throughan.. aperture inlslidef jway. 9.5.

crank handle IllEL4 secured on the forwardly. prol .jecting` endthereof, tocause.the traveler .to move ShaftySE is; rotatable,` by meansof. a

horizontally inone,v direction or the other along the: threaded iportion ofgthe` shaft,4 and thereby toshift the axis of rotation of therasp or. buffer 92ttransversely of `the .plane of a tire Tf `on turn-.,table. 6 1, ,as best, .shown `in .full and. chain-dotted lines at theright of VFigure 9. This adjustment, combined with ,rotational movement.of `the head .62x on post..l0,` toichangethe transverse angle :ofthevertical plane `ofi the tire T', and with adjustment oixframe 84toward and Vfrompost G01-by 4turning handlev., to movethe tackrasp192to-`:ward and from the .pathWof tire.,T'. as the turntable;` ismanuallygrotated `on spindle 65, makes it possible to engagetherotarytack *rasp 92 with all portionsofthetiretread and `sidewalls usually i lbulled `in :preparation for application of the `new tread rubber.describedfformof ithe invention; to `reverse the tire and trim vassembly`on turntable 61 to buff opposite sideportionsofthe tire. 1

`In vtheoperationfof the -form of ,the invention justrdescrbed, theoperator rst `centers land clampsla tirefT'fjmounted on` a rim assemblyR onto the turntable .61,` in the manner previously described. Next;`the turntable is iixed in a verti` .calplane,.substantially asshowninjFigure 8,*in

'which handle `9UV maybe turned to move tackrasp 92 inwardlyto lastarting'.positionbn'one sidewall .thenleftrofrFigure 9,1imwhichthegtire'fl.' :onirimrvs offlthettirepandfthefhandlevlluiisturnewtoshifta rotary It is not necessary, as in thefrst the slide membertransversely in slideway 95 to adjust the depth of the cut to be made inthe tire by the rasp. Motor 93 preferably is continuously driven duringthe buing operations. The operator by engaging the tire vTwith his handsmay either rotate the turntable in spindle 65 in one direction, againstthe tendency ofihelically arranged rows of teeth 92a on the rotatingtack rasp to turn the tire in the opposite direction, or he may brakethe tire, by holding his hands against the same in opposition to suchtendency of the tire to rotate by said action of the tack rasp.Successive circumferential cuts are similarly made by the rotating tackrasp, while the turntable is progressively swung on post 60 throughVarious angular positions to produce contiguous cuts of controlled depthto produce a buied surface of desired contour.

In bufling the outer tread portion of the tire (see full lines in Figure9) progressive circumferential cuts are made by operating the handle|00, while the turntable is swung on post 60 asbefore, the depth of thecontiguous cuts then being determined by swinging the frame 84 on itspivot 85, by turning handle 90. The other sidewall of the tire is buffedby swinging the tire toward the chain-dotted position shown in Figure 9,in which the control handles 90 and |00 are operated substantially inthe same manner as for the iirst described sidewall buling operation.words, the tire T' may be completely buffed from one sidewall thereof tothe other, by progressively swinging the tire through anglesbetween thefull In other aandoen era-ble to adjust said support on its pivot .forshifting said buiiing tool toward or from a tire mounted onsaidtire-mounting means, said headadjusting means and saidsupport-adjusting means being adjustable to engage said buiiing toolwith the tire progressively to buff circumferential areas thereof as itis rotated with said tire-mounting means, said head being shiitable onits pivot to a position substantially remote from said buing tool inwhich it is rotatable in a substantially vertical plane, means forretain .ing said head in said last-named position, and

means selectively operable for locking said tiremounting means againstrotation relatively of said head.

2. A machine of the character described coniprising a xed upright, ahead pivoted on said upright to swing in a substantially vertical plane,

a turntable mounted on said head to rotate in a plane substantially atright angles to said vertical plane, means `for mounting a pneumatictire on said turntable, a support pivotally mounted in lassociation withsaid upright, a rotary buiiing tool mounted on said support, releasablemeans for retaining said head in various angularly adjusted positions onthe pivot thereof to vary the line position of the tire shownin Figure 8tothe chain-dotted position thereof shown in Figure 9, while the depthsof the buifing cuts are progressively controlled at various points vbymanipulating either of the operating handles 90 or |00, or combinationsof both handles.

After the tire T is completely buied the pawl 12 may be released fromratchet 'I6 to permit swinging the turntable to position the tire in avertical plane on the side of post 60 opposite from the bufng device 'll, as indicated inchain-dotted lines'in Figure 9. In this position thetire ',I" is relatively' free and unobstructed for the purpose ofapplying the raw tread rubber stock thereto, and during the progressivetread applying steps, substantially as previously described inconnection with Figures l to 6 of the drawings, the tire may beperiodically held in i'ixed position by cngaging pin 19 in one or otherof the apertures 8| in the turntable 61 to prevent rotation thereof onits spindle 65. As before, the tread stock applied to the tire may berolled down with a hand roll while the turntable is freely rotated.

Thus has been described two illustrative examples of simple, compact,economical, and eiiicient mechanisms in accordance with' the statedobjects of the invention. Modifications of the invention may be resortedto without departing from the spirit thereof or the scope ofthe'appended claims.

` What is claimed is:

1. A machine of the character described comprising a xed upright, a headpivoted on said upright to swing in a substantially vertical plane,means for mounting a pneumatic tire to be rotatable therewith on saidhead in a plane substantially at right angles to said vertical plane, asupport pivotally mounted in association with said upright, a rotarybuinng tool mounted on said support, releasable means for retaining saidhead `in various angularlyi adjusted positions on the pivot thereof tovary the angle of said plane of rotation of said tire-mounting means,meansopangle of said plane of rotation of said turntable, means operableto adjust said support on its pivot for shifting said buflng tool towardor from atire mounted on said turntable, said head-adjusting` means andsaid support-adjusting means being adjustable to engage said builingtool with the tire progressively to buif circumferential areas thereofas it is rotated with said turntable, said named position, andu meansselectively operable for locking said tire-mounting means againstrotation relatively of said head.

3. A machine of the character described comprising a fixed upright, ahead mounted on said upright to rotate through substantially 360 about asubstantially vertical axis, a mounting for a pneumatic tire rotatableabout a substantially horizontal axis on said head, a support shiftablymounted in association with said upright, a rotary buing tool mounted onsaid support to rotate in a plane perpendicular to said upright andradial'to a tire when brought into operating contact with it on saidmounting, releasable means selectively operable to retain said head invarious rotated positions about said vertical axis to vary the angle ofthe planeof rotation of said mounting with respect to said buing tool,and means 4operable at will to shift said support to move said bufngtool toward a tire mounted on said mounting, said releasable means andsaid support-adjusting means being adjustable progressively to buffcircumferential areas of a tire as ,it is rotated with said mounting.

4. A machine of the character described comprising a. fixed upright, ahead mounted on said upright to rotate about a substantially verticalaxis, a mounting for a pneumatic tire rotatable about a substantiallyhorizontal axis on said head, asupport shiftably mounted in associationwith said upright, a rotary buifmg tool mounted on said Support,releasable means selectively operable to retain said head in variousrotated posi:-v tions about said vertical 4axis to vary the angle of theplane of rotation of said mounting with respect to said buing tool,means operable at Will-'to shift Vsaid support to move saidV buln'gtoolritcwardsastirefsmountcdcon; said :mounting:`

`said vreleasa'blameans andl'saidtsuppolteadiusting meansedoeingadjustable. progressively` tozbuffrcircumferentialbareasm a dir-feras:.it` is ,-rotatedowith said:imountingfssaid;:headsbeingsrotatablerr-abdut l said fvertical'y axis toga- :pointisubstantiallytmob- `stru'ctedirbyi;saidtbuilingstoolziin whichlit `isf-:rotatable `e`in sansubstantiallyizverticah.plane abouta `said:and:aneansetselectivelyfloperable ion lockingrsaid`mouni'fingiagainstirotationnfelatively ofnsaidahead,lintsaidrlastnamedpositicnll l l l l 511A machine; 'or l the character;describeducomprising a ixedll'upright; as-'head` mounted: onlfsaidyupright, to rrotate :iaboutrav substantially ,wverttical axisgaarmounting. eroi: 'a pneumatic 1 tire frotatable labcutfasub'stantiallyhorizontalzaxisl` onsaidxhead,

aV support: pivotallmmounted l in :association s" with saidfupright,arrotarytbuinggtool mounted on saithA support .releasablec-zmeans1`-1selectivelyroperabletotretainMsaid. headxin f various .rctated zpositions about said-:vertical .axis `to'` vary `the 'angleifof theplane of rotation of said mounting with respcctstdlsaidlbufng toohandmeans operable at will to shiftsaid support on its pivot to move said lbuing tool toward a tire mounted on said mounting, said releasablemeansland said support-ad` justing means being adjustable progressivelyto buff circumferential areas of a tire as it is rotated with saidmounting.

6. A machine of the character described comprising a xed upright, a headmounted on said `horizontal:axis.saidu'eleasable meansbeing operl abletolocksaideheajd in-saidslastsnamed position,

cressixtelyrto `hun ,circuinferentialf areas 4,of aftire as it isrotated with said turntable.` t

l -8sA-machine` of `the vcharacter n described comprisinggagxeduprightjahead mounted onsaid uprightuto` rotate through substantially360 about-,arsubstantially vertical axis, a mounting forafpneumatic,treyrotatablelabout a substantially hcrizontalaxiszonlsaidhead, a'support shiftably :mounted in associationfwith said ,-upright, aro- ;tarynbufllngtool mounted on saidsupport to rotatefzin aaplaneperpendicular to `:said `upright and radial towartire'rwhen brought intooperating `con-A- Vtact-:with it' on :said wmounting; releasable meansselectively operable to 4retainfsaid `head invarious:rotatedz'positions\fabout said verticali axis to vary ythezangleofJ the plane of rotation off` said l .mounting withirespect to jsaidbuiling tool; said `buiilngtoolbeingshiftable on said supporttransverselyl, of the. plane offmovement ,ofssaidrsupporumeans;operable"to,zadjustnsaidbuing tool transversely, on: said;support; .anda means operable at will to shift said support tcsmove said`buiiing toolqttowardu-a tire @mounted -zonztsaid mounting,

Hsaidu'eleasable meansrfand said support-adjustingmeans:beingfadjustablei progressively to buff circumferential areas of atire as it is rotated with said mounting. l

9. A machine of the character described comprising a rst `upwardlyextending support, a head mounted on said support to swing about a'relatively xed horizontal axis, a mounting for a pneumatic tirerotatable on said head in a plane about an axis angularly of a planethrough said fixed axis, a second upwardly extendingr support,

a rotary buiiing tool mounted on said second support, one of saidsupports being pivoted at its lower end to be shiftable toward and fromthe other, means for adjusting the position of said respect to saidbufiing tool, means operable at will to shift said support on its pivotto4 move said bufling tool toward atire mounted on said mounting, `saidreleasable means and said support-adjusting means being adjustableprogressively to buil circumferential areas of a `tire as it is rotatedwith said mounting, said head being rotatable about said vertical axisto a point substantially unobstructed by said bufng tool in which it isrotatable in a substantially vertical plane about said horizontalaxis,said releasable means being' operable to lock saidhead in said`last-named position, andmeans selectively operable for locking saidmounting against rotation relatively of said head in said last-namedposii tion. i

7 A machine of the character described comprsing a xed upright, a headmounted on said upright to rotate about a substantially vertical axis, aturntable mounted on said head to rotate i about a substantiallyhorizontal axis, means for releasably mounting a pneumatic tire on saidturntable, a support pivotally mounted in association with said upright,a, rotary bulingV tool mounted on said support, releasablemeansselectively operable to retain said head in various rotated positionsabout saidvertical axis to Vary the angle of the plane of rotation ofsaid turntable with respect to said buling tool, and means operable atwill to shift said support on its pivot 'to move said bulng tool toward`a tire mounted on said turntable, said releasable means and saidsupport-adjusting means `being adjustable prohead with respect to saidilxed axis thereof to vary the angle of said plane of rotationof saidmounting between substantially horizontal positions with respect to saidtool and a substantially vertical position on a side-of said rst supportremote from said tool, means for retaining said head with said tiremounting means in said vertical position of tire mounting means, andmeans for relatively adjusting said pivoted support toward and from theother support, said head-adjusting means and said support-adjustingmeans being progressively adjustable to en- `gage said buing tool with atire in said horizontal positions of said mounting progressively tovbuii',circumferential areas of the tire as it is rotated withthemounting about said axis thereof.

10. A machine of the character described comprlsing a pair of supportsrelatively shiftable toward and from each other, a head mounted on,

one of said supports to `rotate through substantially 360 about asubstantially vertical axis, a mounting for a pneumatic tire rotatableabout a substantially horizontal axis" on'said head, a rotary buflingtool mounted on the other of said supports to rotate in a plane,perpendicular to said first-mentioned support and radial. to a tirewhen brought into operating contact with it on said mounting, releasablemeans selectively operable to retain said head in various rotatedpositions about said vertical axis to vary the angle of theV plane ofrotation of said mounting with respect to said bulng tool, andmeansoperable at will tomove said supports relatively of each other `withrespect to a tire on saidrmounting,

said releasable means and said support-moving means being adjustableprogressively to buff circumferential areas of a tire as it is rotatedwith said mounting. '1 y 11. A machine of the character describedcomprising means for mounting a tire to rotate about its axis, meanscomprising a fixed support for supporting said mounting means so as tobe movable between two positions in which the tire may be rotated withits axis located in vtwo relatively remote planes and with its axis indiiferent planes, adjacent tof one of said relatively remote planes atool yforoperating upon said `tire while rotated in or adjacent to theaforesaid one remote plane, means for mounting said tool so as to bemovable toward and from engagement with a tire rotating in `or adjacentto the aforesaid one remote plane and while shifted between adjacentplanes, said tire being rotatable in the other remote plane clearof'said tool and its supporting said mounting means so as to 'be movablebetween two positions in which the .tire may be rotated with itsaxislocated in two relatively remote planes 'and with its axis indifferent planes, adjacent to one of said relativelyIremote planes, aytool for operatinguponisaid tire while rotated in oradjacent to theaforesaid one remote plane,

means for mounting said tool so as to be movable toward and fromengagement with a tire rotating in or adjacent to the aforesaid oneremote plane and while shifted between adjacent planes, said tire beingrotatable in the other remote plane clear of said tool and its mounting,and means for securing the tire mounting whereby the tire may be rotatedin said other remote plane for performing operations on said tire whileso rotated, said tool comprising a' rotary buifer operable to and fromengagement with the vtread mounting, and means for securing the tiremounting whereby the tire'may be rotated in said other. `remote planefor performing operations on said tire while so rotated.

its axis, means comprising a fixed support for portion of a tire whenrotating with its axis in or adjacent to the aforesaid one remote plane-Q said tire mounting being adapted to permit rotation of said tire insaid other remote plane to apply tire-building material to thetire. i

PERRY o. CHAMBERS.

